Where does “trasnamhéadar” come from?
trasnamhéadar (Irish) comes from Irish trasna, from Middle Irish tarsna, from Old Irish tarsno, from Proto-Celtic taras, from Proto-Indo-European terh₂- — to cross over, pass through, overcome.
trasnamhéadar (Irish): interferometer
Ancestry of “trasnamhéadar”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Irish | trasna | across, athwart, cross; cross-, transverse;... |
| 2 | Middle Irish | tarsna | crosspiece; across |
| 3 | Old Irish | tarsno | crosspiece |
| 4 | Proto-Celtic | taras | across |
| 5 | Proto-Indo-European | terh₂- | to cross over, pass through, overcome |